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AU581762B2 - Continuous process for changing the molecular weight of organosilicon compounds - Google Patents

Continuous process for changing the molecular weight of organosilicon compounds

Info

Publication number
AU581762B2
AU581762B2 AU58051/86A AU5805186A AU581762B2 AU 581762 B2 AU581762 B2 AU 581762B2 AU 58051/86 A AU58051/86 A AU 58051/86A AU 5805186 A AU5805186 A AU 5805186A AU 581762 B2 AU581762 B2 AU 581762B2
Authority
AU
Australia
Prior art keywords
molecular weight
changing
continuous process
organosilicon compounds
cylindrical reactor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
AU58051/86A
Other versions
AU5805186A (en
Inventor
Martin Piehler
Manfred Riederer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wacker Chemie AG
Original Assignee
Wacker Chemie AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wacker Chemie AG filed Critical Wacker Chemie AG
Publication of AU5805186A publication Critical patent/AU5805186A/en
Application granted granted Critical
Publication of AU581762B2 publication Critical patent/AU581762B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02—Silicon compounds
    • C07F7/08—Compounds having one or more C—Si linkages
    • C07F7/0834—Compounds having one or more O-Si linkage
    • C07F7/0838—Compounds with one or more Si-O-Si sequences
    • C07F7/0872—Preparation and treatment thereof
    • C07F7/0874—Reactions involving a bond of the Si-O-Si linkage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B01J19/1812—Tubular reactors
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/06—Preparatory processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00002—Chemical plants
    • B01J2219/00027—Process aspects
    • B01J2219/00033—Continuous processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00094—Jackets

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Silicon Polymers (AREA)

Abstract

A continuous method for altering the molecular weight of organosilicon compositions containing Si-bonded oxygen in the presence of a catalyst and preferably under decreased pressure, in which a cylindrical reactor is employed have a ratio of length to inside diameter of between 1:1 and 50:1. A reactive mixture is stirred in the cylindrical reactor by a stirring apparatus having one or more stirring blades, so that the mixture is subjected to a maximum centrifugal acceleration bmax of at least 70 m.s-2 and more preferably at least 165 m.s-2.
AU58051/86A 1985-05-30 1986-05-29 Continuous process for changing the molecular weight of organosilicon compounds Ceased AU581762B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853519411 DE3519411A1 (en) 1985-05-30 1985-05-30 CONTINUOUS METHOD FOR CHANGING THE MOLECULAR WEIGHT OF ORGANOSILICIUM COMPOUNDS
DE3519411 1985-05-30

Publications (2)

Publication Number Publication Date
AU5805186A AU5805186A (en) 1986-12-04
AU581762B2 true AU581762B2 (en) 1989-03-02

Family

ID=6272022

Family Applications (1)

Application Number Title Priority Date Filing Date
AU58051/86A Ceased AU581762B2 (en) 1985-05-30 1986-05-29 Continuous process for changing the molecular weight of organosilicon compounds

Country Status (9)

Country Link
US (1) US4739026A (en)
EP (1) EP0203565B1 (en)
JP (1) JPS61278531A (en)
AT (1) ATE45105T1 (en)
AU (1) AU581762B2 (en)
BR (1) BR8602456A (en)
CA (1) CA1285576C (en)
DE (2) DE3519411A1 (en)
ES (1) ES8704999A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3918337A1 (en) * 1989-06-05 1990-12-06 Wacker Chemie Gmbh METHOD FOR PRODUCING ORGANOSILOXANES
US5173558A (en) * 1991-05-20 1992-12-22 Dow Corning Corporation Base catalyzed preparation of polyorganosiloxanes with controlled low levels of hydroxy substitution
DE4212752A1 (en) * 1992-04-16 1993-10-21 Nuenchritz Chemie Gmbh Process for the production of silicone resins
DE4212754A1 (en) * 1992-04-16 1993-10-21 Nuenchritz Chemie Gmbh Process for the preparation of polyorganosiloxanes
JP2666661B2 (en) * 1992-06-18 1997-10-22 信越化学工業株式会社 Method for producing organopolysiloxane powder
US5420221A (en) * 1993-07-15 1995-05-30 General Electric Company Process for the production of linear organosiloxane polymers by disproportionation
DE19832686A1 (en) * 1998-07-21 2000-02-03 Heidelberger Bauchemie Gmbh Condensation-curing silicone with high strength
JP3546728B2 (en) * 1998-12-02 2004-07-28 信越化学工業株式会社 Method for continuous production of organopolysiloxane gum
JP3546727B2 (en) * 1998-12-02 2004-07-28 信越化学工業株式会社 Method for producing organopolysiloxane gum
TW500768B (en) * 1998-12-02 2002-09-01 Shinetsu Chemical Co Preparation of organopolysiloxane gum
US6414054B1 (en) * 1999-12-21 2002-07-02 General Electric Company Continuous preparation of heat-vulcanizable silicone compositions
JP4488582B2 (en) * 2000-04-13 2010-06-23 東レ・ダウコーニング株式会社 Continuous hydrosilylation reaction method, continuous production method of modified liquid organosilicon compound, and continuous hydrosilylation reaction apparatus
US7514263B2 (en) * 2001-04-02 2009-04-07 3M Innovative Properties Company Continuous process for the production of combinatorial libraries of materials
US7632916B2 (en) * 2002-08-02 2009-12-15 3M Innovative Properties Company Process to modify polymeric materials and resulting compositions
US6897280B2 (en) * 2002-09-23 2005-05-24 General Electric Company Continuous manufacture of silicone copolymers via multi-stage blade-mixed plug flow tubular reactor
BR102012013097A2 (en) * 2012-05-31 2014-05-06 Oliveira Heber Vieira De TAPE AND OLFATIVE REPRODUCTION SYSTEM IN AUDIO OR VIDEO EQUIPMENT WITH INTERNET

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4128568A (en) * 1977-02-10 1978-12-05 Bayer Aktiengesellschaft Process for the continuous preparation of polydiorganosiloxanes
US4250290A (en) * 1979-06-18 1981-02-10 General Electric Company Process for the continuous manufacture of siloxane polymers
US4426508A (en) * 1981-05-12 1984-01-17 Rhone-Poulenc Specialites Chimiques Catalytic preparation of high molecular weight polysiloxanes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2229514C3 (en) * 1972-06-16 1979-01-04 Wacker-Chemie Gmbh, 8000 Muenchen Process for promoting condensation and / or equilibration reactions of organosilicon compounds
US3933882A (en) * 1974-12-02 1976-01-20 Dow Corning Corporation Tube method for the preparation of olefinic siloxane compounds
DE2834627A1 (en) * 1978-02-07 1979-08-09 Bayer Ag Continuous prodn. of high viscosity organo-siloxane! polymers - using tubular reactor with intensive mixing zones
US4551515A (en) * 1984-02-27 1985-11-05 General Electric Company Process for the continuous manufacture of silicone gums
US4599437A (en) * 1984-10-29 1986-07-08 Wacker-Chemie Gmbh Continuous process for varying molecular weight of organopolysiloxanes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4128568A (en) * 1977-02-10 1978-12-05 Bayer Aktiengesellschaft Process for the continuous preparation of polydiorganosiloxanes
US4250290A (en) * 1979-06-18 1981-02-10 General Electric Company Process for the continuous manufacture of siloxane polymers
US4426508A (en) * 1981-05-12 1984-01-17 Rhone-Poulenc Specialites Chimiques Catalytic preparation of high molecular weight polysiloxanes

Also Published As

Publication number Publication date
EP0203565A3 (en) 1987-10-21
CA1285576C (en) 1991-07-02
JPS61278531A (en) 1986-12-09
JPS6310171B2 (en) 1988-03-04
AU5805186A (en) 1986-12-04
US4739026A (en) 1988-04-19
DE3664728D1 (en) 1989-09-07
ES8704999A1 (en) 1987-04-16
ES555441A0 (en) 1987-04-16
EP0203565B1 (en) 1989-08-02
ATE45105T1 (en) 1989-08-15
EP0203565A2 (en) 1986-12-03
DE3519411A1 (en) 1986-12-04
BR8602456A (en) 1987-01-27

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